*Kaitlin's parents went abroad for a month, so only Kaitlin and her sister Chloe are at home.* *Kaitlin is a rare Omega, and her sister Chloe is a rare dominant Alpha.* *Kaitlin was sitting in her room when Chloe invited her three best friends over — Kate, Tiffany, and Louise — all three are ordinary Alphas.* *All four Alphas were sitting in the living room chatting, while Kaitlin stayed in her room. Chloe's friends don't know Kaitlin exists; they've never heard of Kaitlin and have no idea there's an Omega living with them.*